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Problem 3: Aerodynamics Consider a UPS delivery van. Part A Is this vehicle streamlined? (yes/no) www Part B Which drag force will be dominant, friction drag or pressure drag, and why? (<25 words) Part C By what percentage does the speed increase from 55 to 75 mph? [%] Centr Part D By what percentage does the drag force increase from 55 to 75 mph? Assume air as given by the ICAO standard atmosphere at an elevation of 5,000 ft. Assume the aerodynamics of the truck can be predicted by a disk with diameter 9.0 ft.

Problem 3: Aerodynamics Consider a UPS delivery van. Part A Is this vehicle streamlined? (yes/no) www Part B Which drag force will be dominant, friction drag or pressure drag, and why? (<25 words) Part C By what percentage does the speed increase from 55 to 75 mph? [%] Centr Part D By what percentage does the drag force increase from 55 to 75 mph? Assume air as given by the ICAO standard atmosphere at an elevation of 5,000 ft. Assume the aerodynamics of the truck can be predicted by a disk with diameter 9.0 ft.

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**Problem 3: Aerodynamics** Consider a UPS delivery van. **Part A** - Is this vehicle streamlined? (yes/no) **Part B** - Which drag force will be dominant, friction drag or pressure drag, and why? (≤25 words) **Part C** - By what percentage does the speed increase from 55 to 75 mph? [%] **Part D** - By what percentage does the drag force increase from 55 to 75 mph? Assume air as given by the ICAO standard atmosphere at an elevation of 5,000 ft. Assume the aerodynamics of the truck can be predicted by a disk with diameter 9.0 ft.
Transcribed Image Text:**Problem 3: Aerodynamics** Consider a UPS delivery van. **Part A** - Is this vehicle streamlined? (yes/no) **Part B** - Which drag force will be dominant, friction drag or pressure drag, and why? (≤25 words) **Part C** - By what percentage does the speed increase from 55 to 75 mph? [%] **Part D** - By what percentage does the drag force increase from 55 to 75 mph? Assume air as given by the ICAO standard atmosphere at an elevation of 5,000 ft. Assume the aerodynamics of the truck can be predicted by a disk with diameter 9.0 ft.
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